Subliminal self-help auditory tapes: an empirical test of perceptual consequences (Appraisal of claims of subliminal effects of commercially available tapes)

Canadian Journal of Behavioural Science, Jan 1995 by Moore, Timothy E

(f.4) Statistical power (1 - tail) exceeded .9 for the detection of a difference between chance performance ( = 100) and a sample mean of 104. Inasmuch as performance could have (theoretically) reached 180, a mean of 104 should be regarded as a minuscule effect with little or no practical implications.